runing rich aw11 s/c

Post by **Troyhaima** » Fri Jul 28, 2017 5:25 pm

hay guys my 86 s/c is running very rich and bogs down in power or will even stall at low rpm if given too much throtle. it dose have an external fuel pump which was put in there by previous owner for when it was twin charged. i was wondering if the fuel pump was flowing too much fuel would this be my problem. have tryed replaceing afm. didnt make much difrence.
edit. the fuel pump is a bosh 044

Post by **mickeyduck** » Fri Jul 28, 2017 6:58 pm

Well the 044 is certainly gruntier than the standard job. Is the fuel pressure regulator poked? Or just unable to deal with the pressure of the 044? Gotta wonder...
Or maybe the vacuum hose on the FPR is naffed?
See BGB for FPR test... P.265 (tech thread, Members' section download)

Sure hope you suss it out mate.

Post by **JasonFriday13** » Fri Jul 28, 2017 11:07 pm

Yeah, the 044 is a bit overkill for a stock engine. Is it just the 044 running it, or is the factory pump still in the tank? If the stock pump is still in the tank, I would say just remove the 044. Otherwise a bigger fuel pressure regulator will help with flowing all that fuel out at idle.

Post by **Troyhaima** » Sat Jul 29, 2017 10:23 am

i dont know if the stock pump is still in or not. i do know that there is no power running to it. yea was ither going to look at adjustable fuel presure regulator or another fuel pump. trying to get car running so i can sell it as a good running car. will put my spair fuel regulator in and the other vacume lines in and try it.

Post by **Troyhaima** » Sat Jul 29, 2017 4:44 pm

is the vacume hose from intake to fuel regulator meant to be teed off to some thought of valve? (round thing in photo)

Post by **GDII** » Sat Jul 29, 2017 6:06 pm

I'm sure the AW gurus will be more help but this diagram says it should be. Image 2.

http://jp-carparts.com/toyota/partlist. ... 9&fig=1708

Post by **Alsw20** » Sat Jul 29, 2017 8:24 pm

Stock regulator would surely have trouble dumping all that excess fuel?

Post by **Troyhaima** » Sat Jul 29, 2017 10:01 pm

if so what would be a good external fuel pump to go to. would go back to stock. but iv been told pump is no longer in there and dont want to go to all the trouble of dropping the tank. then re wireing the stock pump. wiring has been riped out to wire up the external.

Post by **GDII** » Sat Jul 29, 2017 10:53 pm

The 070 pump might be one to go with. It's not as big and powerful as the 044. My brother runs one on his SR20DE swapped KP61 Starlet. It's the main pump from the surge tank system. It runs about 147whp.

http://www.trademe.co.nz/motors/car-par ... 853957.htm

Like the ad says, 300hp boosted or 400hp NA. There will be other pumps out there that do a similar job but you would want one that flows less if the 044 is putting out too much fuel for the stock regulator.

Post by **mickeyduck** » Sun Jul 30, 2017 10:44 am

In the first pic, why is there what looks like a vacuum line T with one end open? At least that's what it looks like...

Post by **Troyhaima** » Sun Jul 30, 2017 11:02 am

that was stuff i striped out. it was a boost gauge teed off the fuel presure regulator.

The MR2 Owner's Club of New Zealand

runing rich aw11 s/c

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